Question: Suppose that A 1 and A 2 are regular languages. Explain how to modify the proof of Theorem 1 . 2 5 to prove that

Suppose that A1 and A2 are regular languages. Explain how to modify the proof of Theorem 1.25 to prove that (a)A1A2 is a regular language, and (b)(A1??A2)(A2??A1) is a regular language. (Note: (A1??A2)(A2??A1) is the set of all strings that are either in A1 or in A2, but not both.)
Suppose that A1 and A2 are regular languages. Explain how to

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